PacificHealth Laboratories, the company that pioneered the science of muscle recovery with the development of Endurox R4, has just raised the bar again. No product can help your muscles rebuild and recover faster. With this improved formula, we've now decreased the sugar by 25% and optimized the carbohydrate profile for even faster recovery.

The drink that advanced the science of muscle recovery.

Endurox R4, with its patented ratio of carbohydrate and protein (4:1) along with antioxidants, electrolytes and glutamine, is proven to help muscles: